Ok guys here's my problem , I can't decide weather to get Dura ace 9000 chainset or Rotor 3df with Praxis chainrings both are around the same price . I did buy a used 9000 chainset from flea bay but had to send it back as it was damaged beyond repair on the non drive side , gutted . I know I will have to get a new bb to run the larger axle with the 3df or go for the lesser 3d and use my current token bb (its a standard bsa bb). Any replies would be greatly appreciated especially problems with any of them .

one thing to consider might be the cost/availability of replacement chainrings.. with shimano the only one on 4 hole ( and unique BCD ( do they have a patent?) you're stuck with wayyy expensive shimano chainrings and options.

I was orignially looking to get the dura ace 9000 or ultegra 6800 but this factor has swayed me abit toward rotor cranks...

i'm running 6800 with a 3D+ rotor and aero q-rings ...i'm having a few issues' at the moment with my geometry of my archon t1 frame and front mech , ,but i do love the whole look and feel of the rotor it's just limiting my gear selection until i get this problem sorted

I recently changed my default Rotor non-Q rings for Praxis rings on my 3D+ and the increase in stiffness and improvement in shifting was noticeable. I think Praxis are a close second to Shimano in terms of chain rings at the moment.

I also have a new 3DF BB30 110BCD 175mm crank for sale if you interested, PM for details.

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